How $200/Month Becomes $525,000 — Compound Interest Actually Explained

Albert Einstein never said compound interest was the eighth wonder of the world. That quote is from a 1925 bank ad. But the math behind it? Very real — and it's why Warren Buffett earned 99% of his net worth after age 50. In this episode Jake and Emma break down exactly how compound interest works, why starting at 25 vs 35 makes a $300,000+ difference, and what to actually do this week if you're just getting started. ─── CHAPTERS ─────────────────────────────── 0:00 The Einstein quote is fake (and why it doesn't matter) 0:30 Zoe from Boston asks: what even IS compound interest? 1:45 Simple vs compound — the one-sentence difference 3:20 Luca Pacioli and the Rule of 72 (1494, seriously) 5:00 $200/month at 25 vs 35: the $308,000 gap explained 7:10 Hannah from Minneapolis: does the Rule of 72 actually work? 8:00 Patricia from Charlotte: "I'm 52. Is it too late?" 9:20 The 3 mistakes that kill compound growth 11:10 Marcus from Phoenix: is $100/month even worth it? 12:20 The one thing to do this week ─── MENTIONED IN THIS EPISODE ────────────── → S&P 500 30-year average return (1996–2025): 10.4% nominal / 7.4% real → Rule of 72: first published by Luca Pacioli, Summa de Arithmetica (1494) → Warren Buffett: ~99% of net worth accumulated after age 50 → Roth IRA options: Vanguard, Fidelity, Schwab (no affiliation) ──────────────────────── Got a question for next week? Drop it there — we read every one. ───────────────────────────────── ───────────────────────────────────────────── Not financial advice. This channel is for educational purposes only. Every situation is different — for personalized guidance, consult a fee-only fiduciary financial advisor. ───────────────────────────────────────────── ────────────────────────────── TAGS ────────────────────────────── compound interest explained, how compound interest works, compound interest simply explained, start investing at 25 vs 35, rule of 72 explained, is it too late to start saving, Warren Buffett compoun

Added 14 May 2026